View Full Version : Optoma HD81 1080p DLP official discussion


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Alan Gouger
02-23-06, 03:12 PM
I know its natural to want to discus pricing but please keep all mention of street pricing private behind the scenes:)

Thank you.

MrWigggles
02-23-06, 10:16 PM
I am not sure if engberg was talking about street pricing or not. He might have been talking about the MSRP in Scandinavia. Up there they have to compete with the very price competitiive ProjectorDesign units. (PD projectors are rebadged in the US and are not nearly as price competitive.)

Regardless, I sure hope Optoma is not going to try vastly different pricing structures throughout the globe. Marantz tried that a while back and it kind of backfired and created some bitterness (The first "S1" projectors three years ago were available for ~$6K MSRP in Japan and ~$10K MSRP here - the exact numbers escape me for now.)

I sure hope history doesn't repeat itself. DLP manufacturers should always come out swinging not dreaming.

-Mr. Wigggles

HiHoStevo
02-24-06, 02:42 AM
I am not sure if engberg was talking about street pricing or not. He might have been talking about the MSRP in Scandinavia. Up there they have to compete with the very price competitiive ProjectorDesign units. (PD projectors are rebadged in the US and are not nearly as price competitive.)

Regardless, I sure hope Optoma is not going to try vastly different pricing structures throughout the globe. Marantz tried that a while back and it kind of backfired and created some bitterness (The first "S1" projectors three years ago were available for ~$6K MSRP in Japan and ~$10K MSRP here - the exact numbers escape me for now.)

I sure hope history doesn't repeat itself. DLP manufacturers should always come out swinging not dreaming.

-Mr. Wigggles

Sort of sounds like Epson's game with the TW600/ne Epson 800Pro

3no
02-25-06, 06:23 AM
I've just been reading the thread where people have reported bulb problems with the H79. This disturbs me a lot and I would not buy the HD-81 unless I am fairly sure Optomo has addressed this issue. If the bulb life is given as 3000 hours, I should expect an acceptable brightness at 3000 hours. I may want to change it at 1500 hours, but I should not need to do so. The reports of having to change bulbs at 360 hours are scary.

I know that the HD81 is a whole different machine that the H79, but because it is a converted presentation projector may mean it was not designed to be hung upside down in a home theater.

I really want to buy this projector as soon as it comes out... I've been waiting and saving to upgrade for 3 years and the time seems right. But I'm thinking it might be smarter to wait a little longer.
TzungILin-

I share Hyrax's concern. I will be purchasing a new PJ in the next 3 months, but would hesitate to choose one which may see only 300 hours of useful lamp life. Can you tell us what you have done on this platform to ensure longer lamp life at acceptable output? And whether Optima is willing to back that up with a 1 year bulb warranty instead of 90 days?

I like the specs of the HD81, and can live with the fixed offset. I would buy one if when I actually see one it lives up to the glowing descriptions reported here. But only if lamp life concerns are resolved.

SimpleTheater
02-26-06, 10:33 AM
After reading this months article in HT magazine "Are you Getting All the HDTV Resolution You Expected", they didn't test any Optoma projectors.

For those in the know, will the H81 process all 1080 lines at a time, or use a the cheaper "Bobbed half resolution" process.

I was shocked that 1/2 of all tested 1080 displays used the bobbed process and the image detail suffers greatly.

--SimpleTheater

flint350
02-26-06, 11:34 AM
After reading this months article in HT magazine "Are you Getting All the HDTV Resolution You Expected", they didn't test any Optoma projectors.

For those in the know, will the H81 process all 1080 lines at a time, or use a the cheaper "Bobbed half resolution" process.

I was shocked that 1/2 of all tested 1080 displays used the bobbed process and the image detail suffers greatly.

--SimpleTheater

Have you read some of the (few) real Front PJ reviews they have done? They are few and far between and not very representative of the field, nor very in depth, from what I've seen. Their recent rave about the SP777 gave few useful facts and basically ignored the existance of other similar PJ's. They even said it was worth "a tad more" than the average single chip. I think $15k (even discounted) represents more than a "tad" from good single chips or even the Ruby with 3 chip 1080. Just my take on their reviews, but I'd suggest a more thorough search for in-depth reporting.

SimpleTheater
02-26-06, 04:54 PM
Have you read some of the (few) real Front PJ reviews they have done? They are few and far between and not very representative of the field, nor very in depth, from what I've seen. Their recent rave about the SP777 gave few useful facts and basically ignored the existance of other similar PJ's. They even said it was worth "a tad more" than the average single chip. I think $15k (even discounted) represents more than a "tad" from good single chips or even the Ruby with 3 chip 1080. Just my take on their reviews, but I'd suggest a more thorough search for in-depth reporting.

Flint,

It wasn't a review of any product. It was an article specifying the way "cheaper" systems do 1080 resolution. Since 1/2 the units use the cheaper method, I simply would like to know Optoma's plan for the H81. Bobbed or full resolution.

Anyone in the know, please let me know.

As for reviews in all magazines, they are usually poorly done because these mags rely on the manufacturers to send them equipment. This boggles my mind because in general the equipment they test each month amounts to no more than 20K (some months under $5K), so I can't imagine their budgets are so bad they can't buy the equipment, test it, then sell it used on EBay.

--SimpleTheater

MrWigggles
02-26-06, 07:44 PM
SimpleTheater,

Please read the first few sentences of the first post of this thread for your answer. (I would save you the trouble and just answer the question, but you should read the first post anyway.)

Part of your confusion has arisen because TI has stopped naming their chips which I predicted would be a mistake and it most certainly is. Consumers buying "1080p DLP" really don't know what they are getting. Is the product first or second generation smoothpicture (i.e. translational/wobbulated/bobbed) or is it full 1920X1080? TI needs to start naming their chips again.

On a side, note the bobbed or smoothpicture processes has a lot of image benefits. The simulated images I created in the past have shown the promise of smoothpicture; however, TI was only translating the image at 120 movements per second which is not nearly fast enough. With the 2006 generation of smoothpicture chips, have they increased the translational rate? I don't know. But if they have, it should be quite impressive even if only available in an RPTV.

...anyway back to normal programming.

-Mr. Wigggles

darinp2
02-26-06, 09:22 PM
Since 1/2 the units use the cheaper method, I simply would like to know Optoma's plan for the H81. Bobbed or full resolution.

Anyone in the know, please let me know.I'm not "in the know" but if you get a version with an external Gennum scaler I would expect the processing to be very advanced. I'm not sure how they are going to package things though. With that external Gennum processor I wouldn't expect them to put a lot of money into internal scaling, so wouldn't expect the good stuff if one package doesn't use the Gennum chip(s).

--Darin

MrWigggles
02-26-06, 09:59 PM
darin,

SimpleTheater is being a bit vague. Is he talking about the scaling or the DMD chips themselves?

His comment, "I was shocked that 1/2 of all tested 1080 displays used the bobbed process and the image detail suffers greatly." could be referring to the scaling or the wobulation of the chips themselves. Peter Putman did a similar report where he critized the "xHD" chips of TI as being only half resolution at 960X1080. (I don't really agree with his comments but they are wide spread)

If Simple was talking about the scaler, then it is a fair question but I have to think that the scaling would be first rate and I the answer would be "Yes, the scaling of 1080i will be up to quality 1080p and there will not be any bobbing on 1080i film based (3:2 telecined) material."

Now, bobbing on 1080i video based material is sometimes a necessity though. 1080 can be 60 fields per second captured from live action events occuring 1/60th of a second apart (i.e. your Sunday football game on CBS). For such events bobbing of some form is a necessity since you can't weave the image together. (This is where the 1080i standard sort of falls apart. With fast motion 1920X1080i is really more like 1920X540p)

So for stationary images and film based 1080i content, the Gennum should undoubtedly weave and create a true progressive image. For your 1080i sports, the Gennum will have to bob some if not all of the image.

-Mr. Wigggles

gregr
02-26-06, 11:52 PM
Now, bobbing on 1080i video based material is sometimes a necessity though.
MrWigggles I can't believe you are using the terms 'bob' and 'bobbing'. It makes me ill to hear/read this horrible computer terminology applied to video.

Is 'field interpolation' or just 'interpolation' so hard to write? :) :)

TzungILin
02-27-06, 01:30 AM
On lamp,

We always work closely with lamp provider to get the most recent technology. This kind of ultra high pressure lamp has its strength and weakness (like all technology), lamp provider is working to improve their known weakness continuously.

On image processing,

Yes, on page 1, I've stated HD81 is using an external video scalar box, powered by Gennum VXP technology. With one search into Gennum page, one can find the following infos:
Gennum company overall (http://www.gennum.com/corp/index.html)
VXP processing (http://www.gennum.com/ip/vxp_technology.html#trumotionhd)

Yes, it has true 1080i to 1080p motion adaptive de-interlacing with film modes (3-2 and 2-2) for SD and HD inputs. The scalar box simply processes all input and outputs a 1080p signal to projector for display.

guitarman
02-27-06, 03:19 AM
Tz, you think Wing can bring a couple back with him? The HD81 is going to be my next and final purchase I hope. :) At CES we were talking a possible March shipment, things going ok, will it happen?

Sorry about the bulb Frenzy, a couple of bad bulbs now we all want them to stay hot for 3,000 hrs :). Most understand typical bulb fading.
Keep working

Cilent1
02-27-06, 03:28 AM
Bring me back one also :D

MrWigggles
02-27-06, 12:00 PM
MrWigggles I can't believe you are using the terms 'bob' and 'bobbing'. It makes me ill to hear/read this horrible computer terminology applied to video.

Is 'field interpolation' or just 'interpolation' so hard to write? :) :)

I was using the term already used by another poster, but "bob" is not a bad term at all.

The only problem with the term is that it refers back to the time of simple line doublers where lines were repeated with no smoothing thus creating a very visible up and down "bobbing" of the image.

Now a days, the action of bobbing from 480i to 480p or 1080i to 1080p should and almost always has some form of vertical interpolation. This is why I actually prefer the term "interpolated-bob" but I might be the only one using it. The visible "bobbing" from a interoplated-bobbed images are not nearly as pronounced.

-Mr. Wigggles

Hyrax
02-27-06, 01:21 PM
Sorry about the bulb Frenzy, a couple of bad bulbs now we all want them to stay hot for 3,000 hrs :). Most understand typical bulb fading.

Tom -
I'm not really part of the bulb frenzy and I completely understand bulb fading. Typical bulb fading is fine, and in fact, that is what I hope we can expect with this projector. I raise the question because now seems like a better time for Optoma to address the issue rather then after the HD-81 ships in quantity.

azjetski
02-28-06, 02:42 AM
Come on now Tom just a couple? I hope the next projector you get has a rash of lamp problems just to make you know how it feels. I have been reading your post ever since you have had your Sharp. And besides the problem you have had with your HT1000 bulb crazing, you have been dam lucky. So you should not make a joke out of us having problems. Now if this were a thread about Infocus lamps you would be all over it. I never wish nobody any bad luck but this case I do. Maybe then you will understand where the people that are having problems with their H series projectors are coming from. Yes it is a big deal to me. Are you sure that you don't have stock in Optoma. :D

Dale

guitarman
02-28-06, 10:47 AM
Just being the voice of reason. It's a bulb, we have to live with it. :)

Take it to the bulb thread pls.

mpjohnst
02-28-06, 10:52 AM
Tz, you think Wing can bring a couple back with him? The HD81 is going to be my next and final purchase I hope. :)
So says the man who gets a new projector every 3 months... ;)
-Matt

guitarman
02-28-06, 11:03 AM
That's Darin, actually I'm pretty frugal. My friends in Milpitas send me models to test which go back but the 1080p model, I buy! :)

Specially after viewing it setup right in a dark room and hugh screen. I like the two piece idea for the one cable. Plus Gennum scaler deinterlacing, can't wait to run tests on it. I wasn't dreaming there was some talk about March which is now. :)

tyree91
03-03-06, 01:33 AM
I'm sure someone has posted this, but >500 is too much. What is the throw ratio for this unit?

ScottJ0007
03-03-06, 01:52 AM
From the very first post in this thread...6. The throw ratio is about 1.8 to 2.2:1 (about), the offset is 27% (of vertical height), ...

tyree91
03-03-06, 02:18 AM
From the very first post in this thread...
Thanks Scott. I read that how many weeks ago, but forgot where it was. The cut sheets I have from the show don't have these specs. I've since pre-sold one and we're building the theater around it now, and I need to place the AC and HDMI. Thanks again.

inky blacks
03-05-06, 04:18 PM
Some Internet stores are taking pre-orders already on this unit. At least one store is posting a price. Looks affordable. Wish it had a shorter throw, however.

IB

Rob Tomlin
03-05-06, 09:38 PM
Some Internet stores are taking pre-orders already on this unit. At least one store is posting a price. Looks affordable. Wish it had a shorter throw, however.

IB

Wow. I think I found the site you are referring to. Yes, that price would definitely qualify as "affordable"!!! A good 2k less than what the Ruby streets for.

romy101
03-05-06, 09:39 PM
I think if that was the actual price we would all buy one tomorrow. I know I would.

SimpleTheater
03-06-06, 09:19 AM
I'm curious as to where the lens is situated on the projector. Previous Optoma's it was off to one side, making installation easy for me and my cathedral ceiling where I could mount it off center (but get the lens centered).

Does anyone have a picture of the H81 or know if the lens will be off or on-center?

--SimpleTheater

stopdog
03-06-06, 01:48 PM
HD81 CES 2006

http://i49.imagethrust.com/images/OV9/show-image/cespics2006day1and2079.html

SimpleTheater
03-06-06, 01:56 PM
HD81 CES 2006

http://i49.imagethrust.com/images/OV9/show-image/cespics2006day1and2079.html


Talk about pretty! Thanks.

--SimpleTheater

stopdog
03-06-06, 02:03 PM
The image it puts out is even prettier. Check this thread for more pics and screenshots from CES.

http://www.avsforum.com/avs-vb/showthread.php?t=628245&highlight=HD81

jimbecker
03-06-06, 09:26 PM
where are they doing pre-sales on the internet?

Raul GS
03-06-06, 11:08 PM
If this is the same internet vendor that was discussed a while back, you guys might want to at least do a basic check on them before committing any money. Go to reselerratings.com and enter the vendor's name. If it is the same one I checked a few days back you will find out they are at best questionable and at worse dishonest.

What is it they say about a fool and his money?

Good luck.

Rob Tomlin
03-06-06, 11:14 PM
If this is the same internet vendor that was discussed a while back, you guys might want to at least do a basic check on them before committing any money. Go to reselerratings.com and enter the vendor's name. If it is the same one I checked a few days back you will find out they are at best questionable and at worse dishonest.

What is it they say about a fool and his money?

Good luck.

Yeah, after looking closer I agree. Their shipping charges are exhorbitant too.

Ben Harper
03-07-06, 09:18 PM
My distributor told me today that the H81 will not be shipping until June. Has anyone heard anything different (more positive)?

Ben

Al Sherwood
03-07-06, 10:49 PM
My distributor told me today that the H81 will not be shipping until June. Has anyone heard anything different (more positive)?

Ben

Almost the middle of summer!, well that's good and bad news for me.

Obviously bad that I will have to wait much longer to see (enjoy) one of these in my own HT, but...

Good because, the more time for all of the distributors (maybe even a certain 'big box wholesaler' here in Canada) to load up on these and more time for me to get the HT reno underway!

Besides, it will summer, time to be outside!

SimpleTheater
03-08-06, 09:38 AM
If the Gennum processor receives an HDMI input from a DVD player, does anyone know what are the audio output options available?

My planned A/V receiver does NOT have an HDMI input.

--SimpleTheater

c722
03-08-06, 10:07 PM
If the Gennum processor receives an HDMI input from a DVD player, does anyone know what are the audio output options available?

My planned A/V receiver does NOT have an HDMI input.

--SimpleTheater

based on this photo

http://www.watch.impress.co.jp/av/docs/20060110/dg6203.jpg

the only connection out to a receiver is HDMI

SimpleTheater
03-09-06, 08:20 AM
based on this photo

http://www.watch.impress.co.jp/av/docs/20060110/dg6203.jpg

the only connection out to a receiver is HDMI

Thanks - you have better eyes than I do. Do you know of any cable/switch that converts the audio portion of HDMI to optical? I have my heart set on the NAD 773 A/V receiver, but it doesn't have an HDMI input.

--SimpleTheater

Dave Harper
03-09-06, 12:24 PM
My distributor told me today that the H81 will not be shipping until June. Has anyone heard anything different (more positive)?

Ben

Ben,

That's what I've heard too:( I wish it were sooner as I would like to see some reviews and comparisons to the Ruby.

On a side note, are you by chance any relation to the original "Forrest Park or Snellville, GA Harpers"?

My father's entire side of the family lives in and around Atlanta and I go there often to visit the southern side of the family:)!!! Stone Mountain Rocks:D!!! My uncle by the same name lives near Alpharetta and owns a car dealership called Harper Motors SE of Atlanta off of I20.

Maybe we're long lost cousins;)!?!?!?

millerwill
03-09-06, 12:52 PM
Won't the increased resolution of 1080p be readily noticeable at the close viewing distances that are typical with front projection? I come from a background in RPTV, and there it is 'conventional wisdom' that the increased resolution of 1080p is readily observed if one sits as close as 1.5 x the screen diagonal. With FP, it seems that sitting at ~ 1.5 x the screen WIDTH (= 1.3 x screen diagonal) is very common, so wouldn't 1080p be a significant enhancement (whereas it really isn't if one sits 12 ft away from a 50" RPTV)?

Al Sherwood
03-09-06, 01:24 PM
based on this photo

http://www.watch.impress.co.jp/av/docs/20060110/dg6203.jpg

the only connection out to a receiver is HDMI

Based on this photo, will that "IR connector" be compatible with "Niles" IR products? What about the PJ itself?

thanks

MrWigggles
03-09-06, 05:52 PM
Won't the increased resolution of 1080p be readily noticeable at the close viewing distances that are typical with front projection? I come from a background in RPTV, and there it is 'conventional wisdom' that the increased resolution of 1080p is readily observed if one sits as close as 1.5 x the screen diagonal. With FP, it seems that sitting at ~ 1.5 x the screen WIDTH (= 1.3 x screen diagonal) is very common, so wouldn't 1080p be a significant enhancement (whereas it really isn't if one sits 12 ft away from a 50" RPTV)?

Yes, with average vision, you will start to see noticeable differences between 720p and 1080p starting at 2 screen widths back. At 1.5 screen widths the difference should be very obvious - the 1080p image WILL BE SMOOTHER than 720p.

Now, the 1080p will also LIKELY be more DETAILED but that will depend on content. A lot of HD content has over 720p detail but very little HD content available today has full 1920 X 1080 detail (in terms of MTF).

In other words, a 1080p projector with good scaling should be less digital looking than a 720p competitor. However, the final image is only as good as the content.

This lack of detail issue in the content is the main reason I'm not transitioning to a 1080p projector until high definition DVD is available. That's a different discussion...

-Mr. Wigggles

Al Sherwood
03-09-06, 07:21 PM
Yes, with average vision, you will start to see noticeable differences between 720p and 1080p starting at 2 screen widths back. At 1.5 screen widths the difference should be very obvious - the 1080p image WILL BE SMOOTHER than 720p.

Now, the 1080p will also LIKELY be more DETAILED but that will depend on content. A lot of HD content has over 720p detail but very little HD content available today has full 1920 X 1080 detail (in terms of MTF).

In other words, a 1080p projector with good scaling should be less digital looking than a 720p competitor. However, the final image is only as good as the content.

This lack of detail issue in the content is the main reason I'm not transitioning to a 1080p projector until high definition DVD is available. That's a different discussion...

-Mr. Wigggles

Interesting points, and I agree, but would you also say that a 1080i digital satellite signal should look better on a 1080 projector versus a 720 projector?

As for that HD-DVD... I saw one on display in Fry's in Sunnyvale 2 weeks ago, a Toshiba, looked good, unfortunately only playing a demo disc that was comparing regular DVD to HD-DVD using a split screen format.

I'll say one thing those, they had enough anti-theft straps on that puppy, I guess that they were sure that their customers couldn't be trusted! ;)

Bsims2719
03-09-06, 08:15 PM
I don't know if this has already been posted but there are prices on the internet for the HD81 that are a lot lower than the Ruby. Can this be true? Honestly I dont think this projector should have a MSRP 4 to 5 times that of 720p dlp models. Look at rear projection dlp units, the 1080 chips are only 500 more than the 720 models. Arent these the same chips used in front projection. Why are we having to pay so much.

Randall Morton
03-09-06, 09:31 PM
I don't know if this has already been posted but there are prices on the internet for the HD81 that are a lot lower than the Ruby. Can this be true? Honestly I dont think this projector should have a MSRP 4 to 5 times that of 720p dlp models. Look at rear projection dlp units, the 1080 chips are only 500 more than the 720 models. Arent these the same chips used in front projection. Why are we having to pay so much.

It's new. If you want cutting edge then you have to help pay for the development. There are no 1080P DLP Front projectors for sale today anywhere near this price. I guarantee if you had one of the 1080 Optomas today for sale, you could sell it for $20K, probably more.

If I were Optoma, I would probably try to make sure they sold for about the same price as the Sony. Sell as many as you can at the higher price and lower the price when more competition comes out. Wait 6 months to a year and 1080p front projection will be cheaper. This is assuming that Optoma is first to market.

If you want something now, you should probably go for 1080 rear projection and save money.

HoustonHoyaFan
03-10-06, 01:49 AM
Look at rear projection dlp units, the 1080 chips are only 500 more than the 720 models. Arent these the same chips used in front projection.
They are not the "wobulated" 960x1080 chips used in the RPTV, nor the 2048x1080chips used in the dCinema units. They are brand new 1920x1080 .95" DMDs.

jmorris644
03-10-06, 07:36 AM
based on this photo

http://www.watch.impress.co.jp/av/docs/20060110/dg6203.jpg

the only connection out to a receiver is HDMI

Help me out here. Why would we want the sigal back at the receiver anyway? I am sure as soon as I hear I will be imitating Homer (DOH!)

Joe

Dave Harper
03-10-06, 09:31 AM
For the digital audio that can be supplied thru HDMI.

jmorris644
03-10-06, 10:43 AM
For the digital audio that can be supplied thru HDMI.

Hmmm. I am assuming that this is an answer to my question.

My intent is to use the receiver to manage the audio/video inputs. So would I have any use for the HDMI audio output?

Would most people plan to use the scaler to manage their video sources?

Thanks

Joe

Kevin R. Anderson
03-10-06, 10:54 AM
Joe: I think you are right that if you have a receiver that has HDMI switching functionality, then you would not need or use the HDMI audio output of the HD81 scaler. However, for those who do not already have an HDMI switcher, this could be a useful option.

John Kotches
03-10-06, 11:03 AM
To me, it makes more sense to send all HDMI to the scaler, assuming you have sufficient inputs. This allows you to delay HDMI audio output from the "To Receiver" output long enough to handle the video processing latency.

If you exceed your number of available HDMI inputs then it's a different ball game.

Chers,

jmorris644
03-10-06, 12:09 PM
To me, it makes more sense to send all HDMI to the scaler, assuming you have sufficient inputs. This allows you to delay HDMI audio output from the "To Receiver" output long enough to handle the video processing latency.

If you exceed your number of available HDMI inputs then it's a different ball game.

Chers,

That makes sense but it is also a little disturbing. What kind of processing delay do you think we will be seeing? If I use my receiver as my HDMI switch will I be watching something like the old Japanese movies? How out of sync will the video and audio be?

Joe

HiHoStevo
03-10-06, 12:16 PM
That makes sense but it is also a little disturbing. What kind of processing delay do you think we will be seeing? If I use my receiver as my HDMI switch will I be watching something like the old Japanese movies? How out of sync will the video and audio be?

Joe

Joe, I have never used an external scaler (but hope to some day)... however, most receivers that switch video also have delay capability built into the receiver where you can specify a delay (in milliseconds) for the audio.

John Kotches
03-10-06, 12:55 PM
Joe,

Some video processors will tell you what the latency is in frames or milliseconds. I can't answer that, as the various video processors have different latencies.

It doesn't change my point though.

Cheers,

MrWigggles
03-10-06, 09:34 PM
To me, it makes more sense to send all HDMI to the scaler, assuming you have sufficient inputs. This allows you to delay HDMI audio output from the "To Receiver" output long enough to handle the video processing latency.

If you exceed your number of available HDMI inputs then it's a different ball game.

Chers,

You're assuming the scaler has audio delay capability, which would be nice but not 100% guaranteed. I would guess that most HD81 owners will (or should) have a receiver that can do audio delay.

Most modern scalers and projectors have somewhere on the order of 3-5 video fields of delay or what would be no more than 2 film frames of delay. That amounts 50-83 milliseconds. For direct inputs native resolution inputs the delay is usually less but will always be at least 16ms (when compared to a CRT that draws the signal as soon as it gets it).

My fearless guess is that the HD81 will have roughly 4 frames of delay in the scaler and 1 frame at the projector for 5 frames total. Now I don't know how much latency is in DD or THX decoding, but I bet you would be safe adding in 50ms of delay for a good ball park estimate of what you need to apply. (The idea is to get the overall lip-sync mismatch to less than 1 film frame , +/-41ms, at that point it is hard to tell poor lip sync.)

At some point I wouldn't be surprised if broadcasters started putting in a few ms of audio delay of their own as their customers transition from CRT to digital displays.

-Mr. Wigggles

Ps. You will be amazed at the different levels of video delay amoung various digital displays at your local Best Buy. Watch for scene changes. The Samsungs are usually obviously slower than the other displays.

John Kotches
03-10-06, 09:46 PM
Mr. Wiggles,

Yes I am assuming that the scaler has built in audio delay. I think that any competently designed video processor/scaler that includes audio switching capability should include audio delay to account for processor latency.

The latency for DD/DTS decodes isn't high at all, essentially zero. You have to work on the packets and feed your DAC at 48kHz so once you lock onto the signal your latency has to be less than 1/48K seconds to keep the DAC fed without dropping samples.

This latency actually has to go down if you're talking about higher sampling rates. There's really only one way to accomplish this. More DSP ;)

Signia
03-13-06, 05:42 PM
Any ideas when this unit will be out? I have heard June or July. My HT project will be completed in mid-June so I would like to wait for this if it is a real date.

Rob Tomlin
03-13-06, 07:16 PM
Any ideas when this unit will be out? I have heard June or July. My HT project will be completed in mid-June so I would like to wait for this if it is a real date.

Your HT project will go at least 6 weeks beyond your projected completion date, so you should be able to wait for this PJ!

;)

Signia
03-13-06, 07:40 PM
Your HT project will go at least 6 weeks beyond your projected completion date, so you should be able to wait for this PJ!

;)

I would agree with your statment if I was doing it myself but I am having a contractor do it. They are big builder here in St. Louis and average completion time is ~90 days.

Rob Tomlin
03-13-06, 07:49 PM
I would agree with your statment if I was doing it myself but I am having a contractor do it. They are big builder here in St. Louis and average completion time is ~90 days.

Got ya. That does make a difference, but even then contractors can be, well.......contractors!

;)

Good luck!

shenard
03-13-06, 09:44 PM
When is this projector going to be available and does anyone know what the street value will be?

Signia
03-13-06, 11:57 PM
Got ya. That does make a difference, but even then contractors can be, well.......contractors!

;)

Good luck!

Ever see The Money Pit? 2 more weeks...

Al Sherwood
03-14-06, 11:49 AM
Ever see The Money Pit? 2 more weeks...

I stopped saying weeks a long time ago and now say years... :o

SimpleTheater
03-15-06, 12:45 PM
I figured out a solution to my NAD T773 problem (the problem being their is no HDMI input on the NAD and the H81 scaler only has an HDMI output - no optical).

The Gennum 2x2HDMI switcher has an optical output. A bit expensive to solve one small problem, but it should work. This will also make it easy when I switch sources on the Optoma scaler since I won't need to switch audio input on the NAD.
http://www.gefen.com/kvm/product.jsp?prod_id=2757

--SimpleTheater

Earz
03-15-06, 01:11 PM
Looks like I will be forced to buy a new bulb for my h-78 well before I can buy an h-81.
Its also looking like I will have a 1080p source, much sooner than a 1080p pj to use it with.

SimpleTheater
03-15-06, 01:41 PM
Looks like I will be forced to buy a new bulb for my h-78 well before I can buy an h-81.
Its also looking like I will have a 1080p source, much sooner than a 1080p pj to use it with.

This unit looks like its ready for delivery today (a one-chip 1080p DLP projector).
http://www.projectiondesign.com/Default.asp?CatID=1409

I'm not sure of the price, but probably a lot more than $10k.

--SimpleTheater

Earz
03-15-06, 01:50 PM
This unit looks like its ready for delivery today (a one-chip 1080p DLP projector).
http://www.projectiondesign.com/Default.asp?CatID=1409

I'm not sure of the price, but probably a lot more than $10k.

--SimpleTheater

Thanks, looks nice.....but I am planning on spending less than 10k.
So that brings me back to the H-81.

I guess I will be finding out how 1080p looks, via the H-78 until then.

guitarman
03-15-06, 06:32 PM
I heard today late May early june. It can't come soon enough though the projectors receipe has too much to offer. Not just mearly the 1080p chip. High brightness from the larger DMD and 300 watt UHP bulb, auto Iris w/step stops and auto action, Brilliant Color, Gennum scaler box. Internet deals :)

I bet we'll get some wicked ANSI and Full field contrast out of this puppy.

Ohlson
03-15-06, 07:27 PM
guitarman
Are you saying HD81 will have
- powered iris with multiple steps

If you are saying HD81 will have an auto iris like Ruby that would be news to me and bad news according to some people.

Ron Jones
03-15-06, 08:15 PM
If the HD81 schedule slips much more it may not come out much ahead of the planned summer release of the 1080p Sharp FP. The Sharp will probably have a MSRP of a couple of thousand more, but it may also have some additional features, such as an adjustable lens offset (which would make it acceptable for many more home theater layouts).

Ron Jones

guitarman
03-15-06, 10:26 PM
guitarman
Are you saying HD81 will have
- powered iris with multiple steps

If you are saying HD81 will have an auto iris like Ruby that would be news to me and bad news according to some people.


Yeah I talked to the engineer today. The Iris will give the user to have it run auto according to screne brightness or it will alow set stops via the remote.

Optoma has another DC3 which I may get in a week or two. HD7100 it is, it's a HD7300 without the seperate scaler box. It will have all the connection on it's back panel. Nothing on price but I assume it will be a deal.

Ohlson
03-16-06, 03:43 AM
guitarman
I always thought that the plan for HD81 was an iris with multiple steps. Until now I have not heard any hints of auto functionality. There should be a big difference in mechanics and speed between a traditonal power iris with multiple steps and an advanced auto iris.

What has changed lately?

guitarman
03-16-06, 10:36 AM
I think I mentioned Automatic Iris just after CES. The thought was the public likes the idea so they would add one in. I'm also glad the static stepped control will also be there.

The H81 is on schedule, originally slated for June. I'm hoping to get one of the early shipped PJ's. I was told possibly the later weeks of May.

darinp2
03-16-06, 12:58 PM
Why do they not give us a dynamic iris. A step down iris just dims the picture:(
I have seen the Sharp 12k and would never use that iris so I am not excited about this feature.You might not choose to use it, but a step down iris system done right doesn't just dim the picture.

--Darin

engberg
03-16-06, 05:39 PM
guitarman

Is it possible to tell where you get this information from:

"The H81 is on schedule, originally slated for June. I'm hoping to get one of the early shipped PJ's. I was told possibly the later weeks of May"

From Optoma Scandinavia I was told mid September, but I hope you are right.

guitarman
03-16-06, 09:02 PM
June is what everyone said at CES. But I just talked to someone that just got back from Taiwan. He works for Optoma and has an interest because he wants to own an HD81 also. That's where I heard late May/early June.

Dave Harper
03-16-06, 09:36 PM
engberg,

It looks like you're new here, so we'll cut you some slack on this one, but Tom is the "In Guy" for AVS with Optoma;)!!! He lives real close by and is in on all the dirty little secrets:D

Al Sherwood
03-16-06, 10:54 PM
Well, the Prismasonic DYI lens deal has closed, would have been nice to go with the HD81.

I would really like to impliment a constant height setup with this PJ when(if) I get one, but I shouldn't put the cart...er lens before the PJ.

SimpleTheater
03-20-06, 01:29 PM
I'm assuming the H81 will use a infrared remote control - but will the scaler also have a remote (e.g. to switch sources), or will the scaler be the only unit that has a remote and also control the H81?

Here are the scenarios:
a) H81 comes with remote, scaler does not
b) H81 and Scaler come with remotes (2 remotes in box)
3) Scaler comes with remotes (controls both units)

Anyone know which one is the right answer?

--SimpleTheater

Dave Harper
03-20-06, 01:48 PM
Get off your duff and switch it manually. We're all getting too fat sitting around watching TV anyway;)!!!

Just kidding of course. That's a great question and I'm sure Tom can answer that one before I can find out:)

Nevr2Big
03-20-06, 08:49 PM
Yin & Yang.

I have been anxiously awaiting this new addition to the 1080p realm and had planned to buy it (assuming the majority of information gleaned from this thread turns out to be accurate). However, I can't help but have real concerns about Optoma as a company based of the rather numerous negative experiences others have reprted with customer service and substandard bulb performance.

Is there any reason to believe that the H81 will be utilizing a more reliable light source possibly from a different manufacturer (hopefully avoiding the misfortune experienced by others at this forum) ?

HiHoStevo
03-20-06, 09:43 PM
Hey TzungLIn...............

Where is the HD7300 thead you promised????

Quit all that boring "work stuff" and leak some info...........

danielo
03-22-06, 11:19 AM
guitarman

Is it possible to tell where you get this information from:

"The H81 is on schedule, originally slated for June. I'm hoping to get one of the early shipped PJ's. I was told possibly the later weeks of May"

From Optoma Scandinavia I was told mid September, but I hope you are right.

This would infact make sense, ThemeScene allways take 3 more months to tune/check/makelogo's whatever before they release the same models. If it
really ships in Jun in the states the Sept date for europe could be on target.

Daniel.

Ron Jones
03-23-06, 02:11 PM
I'm assuming the H81 will use a infrared remote control - but will the scaler also have a remote (e.g. to switch sources), or will the scaler be the only unit that has a remote and also control the H81?

Here are the scenarios:
a) H81 comes with remote, scaler does not
b) H81 and Scaler come with remotes (2 remotes in box)
3) Scaler comes with remotes (controls both units)

Anyone know which one is the right answer?

--SimpleTheater

Since there is a RS-232 control cable required between the scaler/switcher box and the projector, I would assume there will be a single remote and the control signals are passed between the 2 units. This is type of arrangement I have with my Sony G70 CRT proj. and the PC-1271 switch box.

Ron Jones

SimpleTheater
03-23-06, 02:43 PM
Since there is a RS-232 control cable required between the scaler/switcher box and the projector, I would assume there will be a single remote and the control signals are passed between the 2 units. This is type of arrangement I have with my Sony G70 CRT proj. and the PC-1271 switch box.

I certainly hope you are right. I've seen products with RS-232 input only to allow control by a Crestron. If anyone has a picture of the rear of the H-81 we may have the answer.

--SimpleTheater

Randall Morton
03-23-06, 03:33 PM
Since there is a RS-232 control cable required between the scaler/switcher box and the projector, I would assume there will be a single remote and the control signals are passed between the 2 units. This is type of arrangement I have with my Sony G70 CRT proj. and the PC-1271 switch box.

Ron Jones


I don't remember the RS-232 cable requirement being discussed in this thread but maybe it was. Was this something TzungLIn posted earlier? My Dwin TV3 only has the DVI cable between the scaler and projector and only requires one remote.

Ron Jones
03-23-06, 08:10 PM
It was posted earlier about a control cable and TzungLin responded to my question by saying is uses a RS-232 cable with DB9 connectors between the scaler/switcher and the projector.

Ron Jones

HiFiGuy1
04-02-06, 01:14 PM
I believe he actually stated that the scaler has two RS-232 control ports, one for use with the scaler and one for use with an external control system.

scottyb
04-03-06, 10:29 PM
I can't read this whole thread, so......
When is this projector expected?

Scott

Ericglo
04-03-06, 10:34 PM
I can't read this whole thread, so......
When is this projector expected?

Scott

Can't or won't?

Read this page.

Ericglo

jjwstar
04-04-06, 12:16 AM
what is the release date on this projector? Street price price?

guitarman
04-04-06, 01:35 AM
End of May/early June. I'm in for the early release even if in Beta form for review. Bring it on pls. I'll have my 1080 Tosh DVD player ready and waiting. Can't wait to see the Matrix, Lord or the Rings on the HD81. Really interested in the auto iris and how it works with the first DLP FP.

darinp2
04-04-06, 01:45 AM
Really interested in the auto iris and how it works with the first DLP FP.Have you confirmed that this is a dynamic iris that adjusts while the movie is playing and not just an iris that automatically goes to some preset for a certain picture type selection (like Dynamic, Standard, Cinema, etc.).

If it is really a dynamic iris I think they should be claiming higher than 10k:1 on/off CR.

--Darin

retret
04-04-06, 03:34 AM
End of May/early June. I'm in for the early release even if in Beta form for review. Bring it on pls. I'll have my 1080 Tosh DVD player ready and waiting. Can't wait to see the Matrix, Lord or the Rings on the HD81. Really interested in the auto iris and how it works with the first DLP FP.

Tom, what's the street price gonna be when it comes out?, I was planning to get the Ruby but my home theater construction will start last week of april and probably will be done first week of july. Thx.

scottyb
04-04-06, 08:04 AM
Can't or won't?

Read this page.

Ericglo


Can't,

I have an 18 month old daughter:):)

scottyb
04-04-06, 08:08 AM
Tom, what's the street price gonna be when it comes out?, I was planning to get the Ruby but my home theater construction will start last week of april and probably will be done first week of july. Thx.


I see your kinda new to the forum. Street pricing discussion is not allowed as per the owners of the forum. You can send a private message to Tom, though.

Scott

guitarman
04-04-06, 10:49 AM
Have you confirmed that this is a dynamic iris that adjusts while the movie is playing and not just an iris that automatically goes to some preset for a certain picture type selection (like Dynamic, Standard, Cinema, etc.).

If it is really a dynamic iris I think they should be claiming higher than 10k:1 on/off CR.

--Darin

I was very clear when asking about this. Dynamic and static, it will do both. They're already are using a dynamic iris with the BigVizion setups.

longshot
04-04-06, 11:08 AM
Will this have a short throw? If so I'll have to wait.

guitarman
04-04-06, 11:32 AM
106" diag screen 15.4' min 18.5max. These are the stats for the Ep910 which is the platform they have for the HD81, assume throw will be similar. I'll find this out because this is quite a long throw and I may have to make some adjustments. :(

kevivoe
04-04-06, 11:54 AM
106" diag screen 15.4' min 18.5max. These are the stats for the Ep910 which is the platform they have for the HD81, assume throw will be similar. I'll find this out because this is quite a long throw and I may have to make some adjustments. :(

This is a perfect throw. My room size is 22 x 34 feet and all of these short throw PJ's are killing me. The HD7100 is the worst offender. The HD81 being in this range is great however I have seen some other data that suggests it is shorter than the Ep910.

k

dstoe
04-04-06, 11:56 AM
106" diag screen 15.4' min 18.5max. These are the stats for the Ep910 which is the platform they have for the HD81, assume throw will be similar. I'll find this out because this is quite a long throw and I may have to make some adjustments. :(

If this is true, I am out. :(

SimpleTheater
04-04-06, 12:52 PM
This is a perfect throw. My room size is 22 x 34 feet and all of these short throw PJ's are killing me. The HD7100 is the worst offender. The HD81 being in this range is great however I have seen some other data that suggests it is shorter than the Ep910.

I agree. The short throw PJ's were killing me, as well as the PJ's where the offset required the PJ to be below the top of the screen. The H81 fits my room perfectly and I can't wait for it to be released.

--SimpleTheater

MrWigggles
04-04-06, 01:18 PM
106" diag screen 15.4' min 18.5max. These are the stats for the Ep910 which is the platform they have for the HD81, assume throw will be similar. I'll find this out because this is quite a long throw and I may have to make some adjustments. :(
Hold on guys

But the aspect ratio of the chip is different so the throw ratio is different. The ep910's .95" SXGA+ chip is .76" wide. The .95" 1080p chips is .828". This means that the HD81's throw ratio is going to be 1.8:1 to 2.2:1 not 2.0:1 to 2.4:1. (This is where Tzung, the designer, gets his "1.8 to 2.2:1 (about)" mentioned in the first post, and I don't think it has changed)

This means that for a 106" diag screen (which is 92" wide), the projection distance is going to be 13.8' to 16.9'. This is difference is a little less than two feet, but that can make or break an install.

Now let's turn those frowns upside down.

-Mr. Wigggles

guitarman
04-04-06, 02:18 PM
Update, correct different aspect different throw 1.8 to 2.2. Also can't commit to the dynamic iris, still testing it. If it doesn't do a good job then no go for that. But for sure it that doesn't please an adjustable one will be on board.
'

ScottJ0007
04-04-06, 11:25 PM
Update, correct different aspect different throw 1.8 to 2.2. Also can't commit to the dynamic iris, still testing it. If it doesn't do a good job then no go for that. But for sure it that doesn't please an adjustable one will be on board.
'What? I don't understand what you are trying to say.

Is MrWiggles correct on the throw distance or not?

John Kotches
04-05-06, 07:41 AM
Tom is trying to say that Mr. Wiggles is correct on his statement about throw ratio of 1.8 to 2.2.

Why Tom was in such a hurry and typed in broken english, I don't know.

longshot
04-05-06, 11:01 AM
Excuse my ignorance but what is the formula for calculating the throw distance to feet?

My Sim 300e is 17.5' from my 100' Firehawk. The way my room is laid out with the wiring I can not move the projector forward or backward.

Does the calculations change if I decide to go constant height in the future?

millerwill
04-05-06, 11:20 AM
Excuse my ignorance but what is the formula for calculating the throw distance to feet?

My Sim 300e is 17.5' from my 100' Firehawk. The way my room is laid out with the wiring I can not move the projector forward or backward.

Does the calculations change if I decide to go constant height in the future?

The 'throw' is the ratio (distance of pj lens to screen)/(screen width). For your 100" FH, is 100" the diagonal? If so, it is 87" wide, so the throw is (17.5x12)/87 = 2.4. If your screen is 100" wide, the throw is (17.5x12)/100 = 2.1.

guitarman
04-05-06, 12:05 PM
Tom is trying to say that Mr. Wiggles is correct on his statement about throw ratio of 1.8 to 2.2.

Why Tom was in such a hurry and typed in broken english, I don't know.

Yeah what he said :)

ddanont
04-18-06, 07:17 PM
Hi Guitarman or any one who could help clarify,

Do you know if the HD81 accepts 1080p inputs? ... or does it simply upscale/rescale everything from sources such as 1080i to 1080p? For example, 1080p TV sets today do not have 1080p inputs. I re-read the thread & searched around but didn't get further. Thank you much.

-Duke

velvetpoet
04-18-06, 07:21 PM
I beleave TzungILin awnsered that question in one of his posts. It will pass 1080p signals directly to the projector if i remember correctly.

Rob Tomlin
04-18-06, 08:19 PM
I searched but couldn't find a direct answer either.

Will this pj have a 1080p input?

ddanont
04-18-06, 08:56 PM
Rob,

Just found it. Tzunglin made a small mention on 1080p pass through in Post #310 within this thread. Now do you or any one have an update on its release status? Haven't seen posts about this item for weeks! Thank you.

guitarman
04-18-06, 09:08 PM
June, I'm hoping to get a machine in May, even if in beta form. I might be able to help with some user glitches.

Rob Tomlin
04-18-06, 10:29 PM
Rob,

Just found it. Tzunglin made a small mention on 1080p pass through in Post #310 within this thread. Now do you or any one have an update on its release status? Haven't seen posts about this item for weeks! Thank you.

Thanks. Here's what he said:

Yes, it will take 1080p input, and pass it through to projector.

Still no official release date though afaik.

jjwstar
04-19-06, 06:00 PM
the seperate cable connector seem abit outdate piece of electronics. dont you think? the setup looks cumbersome on a ceiling mount. what were they thinking?

sam54
04-19-06, 06:34 PM
This is a perfect throw. My room size is 22 x 34 feet and all of these short throw PJ's are killing me. The HD7100 is the worst offender. The HD81 being in this range is great however I have seen some other data that suggests it is shorter than the Ep910.

k

At least with a short throw you can still place the projector on the ceiling in front of you. For us with smaller rooms who want a large screen it'd need a few million lumens or a gamma ray emitter to beam it through the wall of the next room! :cool:

Ingeborgdot
04-24-06, 09:04 PM
I may have missed it but how LOUD is this thing? Where is a ratio for it so I can see if it would fit a 104" screen at 17.5 feet? Thanks.

QQQ
04-24-06, 09:47 PM
Instead of using the old "I may have missed it" line, you might want to read the thread ;) :). I believe about half of it addresses the latter question.

guitarman
04-25-06, 09:31 PM
Just heard today we'll be seeing HD81's around Infocom time. Not sure if I should mention this but anyway they decided on a steps type Iris (17 steps).

J-dubb16
04-25-06, 10:09 PM
Guitarman,

You mentioned you may get one of these ahead of the release time to review, is this still a possibility?

J-dubb

funlvr1965
04-25-06, 10:27 PM
when is infocomm? and when you say "we'll be seeing HD81's around Infocom time." does that mean they will be available to customers around the time of infocomm or just be shown at infocomm?

guitarman
04-25-06, 11:37 PM
Yes available early June.

guitarman
04-25-06, 11:40 PM
Guitarman,

You mentioned you may get one of these ahead of the release time to review, is this still a possibility?

J-dubb

Maybe a week or two early, so late May I hope.

retret
04-26-06, 04:18 AM
Maybe a week or two early, so late May I hope.

I hope it will hit the street in June, I really want this unit.

J-dubb16
04-26-06, 10:42 AM
I have kept up with this thread, but I do not recall if they had a final set MSRP. I thought it was dependant on a few final decisions. Are they any closer to a MSRP. Also, what are the chances this PJ will street at or about the same as the Benq 8720?

This is promising, my HT should be done around June and I would love to add another PJ to my list of possibilities

Thanks,

guitarman
04-26-06, 11:37 AM
Nothings changed it's $9999 with the external HDMI switching upscaling Gennum deinterlacer box. Maybe you were thinking they'd raise it due to the $30,000 1080 1chip DLP. I hope not :)

The external box was going to MSRP at $2999. It can be used through a DVI input with other projectors.

Getting both the PJ and Gennum box at the $9999 msrp is extraordinary. Use your thinking cap of Optoma's history to figure MAP.

Al Sherwood
04-26-06, 12:08 PM
Nothings changed it's $9999 with the external HDMI switching upscaling Gennum deinterlacer box. Maybe you were thinking they'd raise it due to the $30,000 1080 1chip DLP. I hope not :)

The external box was going to MSRP at $2999. It can be used through a DVI input with other projectors.

Getting both the PJ and Gennum box at the $9999 msrp is extraordinary. Use your thinking cap of Optoma's history to figure MAP.

So up here in Canada that should only equate to about 1/2 million Canadian dollars! :rolleyes:

Or maybe soon that might be barrels of oil! :D

Seriously, be nice when it finally arrives, any idea on supply?

guitarman
04-26-06, 12:32 PM
Figure at launch 100 to 200 machines will hit the States with first weeks shipment. Picking up speed steadily. Get your pre-order in. Not sure when worldwide launch would be.

I get the 100/200 from past launchings. The HD72 150 machines, the HD7100 100 machines. That's just the first week though, follow ups come the next week and following weeks to catch up with demand. Something like the Tosh HDA1, most stores wanted tons and got just 3 or 4 the first week.

Al Sherwood
04-26-06, 01:22 PM
Figure at launch 100 to 200 machines will hit the States with first weeks shipment. Picking up speed steadily. Get your pre-order in. Not sure when worldwide launch would be.

I get the 100/200 from past launchings. The HD72 150 machines, the HD7100 100 machines. That's just the first week though, follow ups come the next week and following weeks to catch up with demand. Something like the Tosh HDA1, most stores wanted tons and got just 3 or 4 the first week.

Interesting, unfortunately for me the trickle into Canada might take even longer, there are a few online "authorized" e-tailers for Optoma here but not many. There are no bricks and motar locations near me that carry any of the higher end Optoma products either.

With such a new machine and the cost, I personally would want to know that the "Canadian warranty" was valid.

Thanks for the numbers...

jmf3369
04-27-06, 01:43 AM
Guitarman,

You state that they will sell the Genum scaler seperate for $2999, do you know if they have any plans to sell the projector without the scaler? I have an Anthem D2 with the Genum Scaler already built into it.

--Jeff

omenII
04-27-06, 04:35 AM
The external box was going to MSRP at $2999. It can be used through a DVI input with other projectors.
Tom, so you're saying Optoma are selling the scaler as a standalone item as well? Do you know if it's OEM'd or designed and built by Optoma themselves around the Gennum chip? I'd be interested in pairing it up with my HD72 if it streeted near enough the Iscan VP30's price...

Earz
04-27-06, 07:36 AM
Figure at launch 100 to 200 machines will hit the States with first weeks shipment. Picking up speed steadily. Get your pre-order in. Not sure when worldwide launch would be.

I get the 100/200 from past launchings. The HD72 150 machines, the HD7100 100 machines. That's just the first week though, follow ups come the next week and following weeks to catch up with demand. Something like the Tosh HDA1, most stores wanted tons and got just 3 or 4 the first week.

Sounds to me like it might be released in time for the Blu Ray launch...and I know of a few HDA1's returned locally...including mine because of far too many quirks.

engberg
04-27-06, 10:31 AM
I just received this mail from Optoma Scandinavia, and once again one must conclude that Europe comes last :mad:

Dear Niels,



Thanks for your approach!



It might be that the HD81 is only a few weeks away in the US (even though my personal feeling is that this sounds a little optimistic)…



We don’t plan to have the 1080p product before late summer, maybe September in Europe. This is the knowledge of the development right now, but it is always a chance that it could be sooner, but I doubt it. It would also be a challenge to launch a new, hot product in the middle of the summer anyway, so I think we are better off planning HD81 for after the big summer holidays.



Best regards,

Håvard Foseid,

General Manager Optoma Scandinavia

jmorris644
04-27-06, 10:41 AM
I just received this mail from Optoma Scandinavia, and once again one must conclude that Europe comes last :mad:

Dear Niels,



Thanks for your approach!



It might be that the HD81 is only a few weeks away in the US (even though my personal feeling is that this sounds a little optimistic)…



We don’t plan to have the 1080p product before late summer, maybe September in Europe. This is the knowledge of the development right now, but it is always a chance that it could be sooner, but I doubt it. It would also be a challenge to launch a new, hot product in the middle of the summer anyway, so I think we are better off planning HD81 for after the big summer holidays.



Best regards,

Håvard Foseid,

General Manager Optoma Scandinavia



At lease you got an honest answer from him. Maybe you can guilt him into giving you some current detail specifications?

Joe

guitarman
04-27-06, 10:55 AM
Guitarman,

You state that they will sell the Genum scaler seperate for $2999, do you know if they have any plans to sell the projector without the scaler? I have an Anthem D2 with the Genum Scaler already built into it.

--Jeff

I bet they will becuase the HD7300 got split up to the HD7100/HD7300. I'll ask about it.

I have the HD7100 and will be receiving the Scaler soon. It just hooks up to the DVI port and I'll pick up the several HDMI & other connections that are upscaled. Plus there's some color controls from what I understand allow you to alter the Y/C points. Ofcourse your receiver won't do that, fine receiver never the less. :)

7Music7
04-27-06, 12:21 PM
Is there a lens offset and is it adjustable?

Hyrax
04-27-06, 12:27 PM
Is there a lens offset and is it adjustable?
Unfortunately not adjustable. Read the first few pages - you'll see a possible work-around by tilting your screen and the HD-81 slightly.

7Music7
04-27-06, 12:36 PM
Thank you.

skogan
04-27-06, 11:28 PM
I was pretty disappointed when I read about the 27% offset and long 1.8 throw on this projector. I couldn't see many people being able to use it.

Then it suddenly struck me that instead of ceiling mounting it, I could mount it on a shelf in the back of the room - thus getting as tight to the ceiling as possible as well as far enough away to make the throw! I'll still need to lean the top of the screen forward a bit (by my calculations about 4") but I can live with that.

At about 16' away from the screen, I should just barely make a 115" diag 16X9 screen. Now if it's bright enough, and the price is around where we thought it may be, I may have found a contender here!

Hyrax
04-27-06, 11:54 PM
Then it suddenly struck me that instead of ceiling mounting it, I could mount it on a shelf in the back of the room - thus getting as tight to the ceiling as possible as well as far enough away to make the throw!

I'm trying to figure out much the same thing that you are, and I'm getting a wee bit confused. Isn't the offset 'up', as in you put the projector on a table and the offset image will be above the projector. Will you not have to mount it under a shelf at the back of your room? At least that was what I was thinking I was going to need to do.

I'm also a bit confused by the meaning of a 27% offset. 27% of what? If I'm going to have a 48" high screen, is it 27% of 48", no matter how far away the projector is from the screen? Or if I put the projector 16' away from the screen, is the offset 27% of the 16'?

ScottJ0007
04-28-06, 01:38 AM
Hyrax,

If you shelf mount the projector on a low self with the projector in an upright position, the offset is how far the bottom of the projected image is above the lens. However, if you invert the projector and ceiling mount it, the offset is how far the top of the projected image is below the lens.

The offset is 27% of screen height, meaning on a 48" tall image, the top of the image will be about 13" below the lens if the projector is inverted and ceiling mounted.

There seems to be a number of people in this thread that don't like the offset on this projector, but to me it seems ideal if you want to do a ceiling mount. Many of the dedicated theaters I've seen on AVSforum have ceiling mounted projectors. If this is how you are set up, you actually want a significant offset. I actually wish it had MORE offset since I have 9 foot ceilings.

If I understand it correctly, here's how the Optoma HD81 would work with a 110" diagonal screen (16:9), ceiling mounted in a room with 8 foot ceilings:
http://home.comcast.net/~scottj0007/theater/optoma.jpg

Looks pretty good to me! :)

skogan
04-28-06, 01:56 AM
Nice diagram.

skogan
04-28-06, 02:04 AM
It's getting late, so someone please correct me if I'm making an error. But I think you should be able to shift the image down from the projector even if you have it set upright. In other words, can't you have the projector sitting upright on a high shelf, and instead of the image being projected above it like a table mount, you can project it 27% below it, just as though you had it inverted?

IOW If I mount it high in the back of my room, must I invert the projector? I had assumed that it could be 27% above or below - from either the upright or upside down position.

skogan
04-28-06, 02:05 AM
hmm I think I may be wrong about that.

HiHoStevo
04-28-06, 02:16 AM
hmm I think I may be wrong about that.

:D Yes you definitely have that one wrong...... :D

If it is shelf mounted at the rear of the room near the ceiling the projector must also be inverted or the image will be on the ceiling!

jmorris644
04-28-06, 08:56 AM
With that long of a throw don't forget to take a look at where you will be sitting and make sure that you will not be in the light path between the bottom of the screen and the lens. I took a string and pulled it taught along that path and ended up being really disappointed in the lack of head room I was going to get. I am hoping that the final specs end up different than the original ones.

Joe

Hyrax
04-28-06, 09:57 AM
Scott,
Thanks for the diagram, it helps.
Like yourself, I wish the offset were just a bit higher, but it will work pretty well for me just the way it is. I'm going to try putting a shelf at the back of my room and mounting the (inverted) PJ underneath it. With 9' ceilings, I'll probably have to tilt it a bit.

sam54
04-28-06, 02:52 PM
Too bad they won't offer it in both a long throw and a short throw versions......

Rob Tomlin
04-29-06, 07:56 PM
Too bad they won't offer it in both a long throw and a short throw versions......

I agree.

The long throw is much more of an issue for me than the offset. And as Scott pointed out, I don't think the offset should be much of a problem for most people anyway.

My room is just a tad over 19' long. I have a 123" diagonal screen, so the pj would have to go very far back on the ceiling. I have a soffit that probably comes out 11" or so, so the rear of the pj would be getting very close to the soffit.

lovingdvd
05-01-06, 11:49 AM
Tom - does the external scaler box output to a normal DVI cable, or do you need to run a proprietary cable to the pj to use the external scaler? Will it provide per pixel motion adaptive deinterlacing for 1080i sources? How many DVI and/or HDMI inputs does it have? Thanks.

guitarman
05-01-06, 06:05 PM
They told me I would hook it up through DVI. I think it has four HDMI in's and HDMI out. For sure motion adaptive on 1080i with the Gennum chip.

Signia
05-01-06, 06:13 PM
My HT project is going to be finished in about a month and my AV guy has one of these on order for me. He is trying to find out the throw distances from Optoma so we can pull the wires through the ceiling in the right spot before they start taping and muding.

Frank J Manrique
05-01-06, 09:26 PM
Hyrax,

If you shelf mount the projector on a low self with the projector in an upright position, the offset is how far the bottom of the projected image is above the lens. However, if you invert the projector and ceiling mount it, the offset is how far the top of the projected image is below the lens.

The offset is 27% of screen height, meaning on a 48" tall image, the top of the image will be about 13" below the lens if the projector is inverted and ceiling mounted.

There seems to be a number of people in this thread that don't like the offset on this projector, but to me it seems ideal if you want to do a ceiling mount. Many of the dedicated theaters I've seen on AVSforum have ceiling mounted projectors. If this is how you are set up, you actually want a significant offset. I actually wish it had MORE offset since I have 9 foot ceilings.

If I understand it correctly, here's how the Optoma HD81 would work with a 110" diagonal screen (16:9), ceiling mounted in a room with 8 foot ceilings:
http://home.comcast.net/~scottj0007/theater/optoma.jpg

Ummm...very interesting. Now, I wonder how this projector would work with my 12 foot wide Scope screen that's located in a 30' long room and which currently is about two feet (or there abouts; I can adjust the height of the screen up or down) below the 8' ceiling. I would ceiling mount it in a special carriage that adjusts throw length as well as side ways positioning.

Anyone care to comment?... :)

-THTS

ScottJ0007
05-01-06, 10:00 PM
Ummm...very interesting. Now, I wonder how this projector would work with my 12 foot wide Scope screen that's located in a 30' long room and which currently is about two feet (or there abouts; I can adjust the height of the screen up or down) below the 8' ceiling. I would ceiling mount it in a special carriage that adjusts throw length as well as side ways positioning.

Anyone care to comment?Tell me a bit more about your scope setup. Are you using an anamorphic lens or the projector's zoom to fill the 2.35:1 screen? The two different setups will significantly change the required projector distance for the HD81. I'm not sure why you need the special carriage for the SIDE-WAYS positioning.

ScottJ0007
05-01-06, 10:26 PM
Tom or TzungIlin,
I know in the original post is says that the offset is 27% of screen height. However I have assumed that this is an "approximate" number. With other projectors by Optoma, they provide a mathematical formula for calculating the offset. For example, the HD Optoma HD72 has an offset equal to L X tan(6.52) where L is the projector distance from the screen. The effect with the HD72 is that the offset increases as the projector distance increases. In other words, a given height image will have a variable offset depending on the zoom and the projector distance.

Can one of you get the actual offset calculation or are you positive that it is a FIXED 27% of screen height, regardless of projector distance and zoom? For example, the Optoma HD81 will project a 96"X54" image at any distance between approximately 14'4" and 19'7". Will the offset be the same for this sized screen at either projector distance or will it be greater if the projector is at 19'7"?


The reason I ask is because for anyone who wants to use a 2.35:1 screen, and they want to fill the screen by using the zoom or putting the screen on a sliding mount to adjust distance, the change in offset could drastically change the requirements of the set-up.

Rob Tomlin
05-01-06, 11:05 PM
Is there any official word on what the native contrast ratio will be?

guitarman
05-01-06, 11:24 PM
At CES they were talking real time tuned 65k contrast of 6000.1 to 7000.1

Rob Tomlin
05-01-06, 11:43 PM
At CES they were talking real time tuned 65k contrast of 6000.1 to 7000.1

Thanks. And that was without an iris, correct?

Ohlson
05-02-06, 06:38 AM
Rob T.
To get a high contrast I am sure Optoma works by optmizing the aperture/iris. Sharp 12k has a dual iris system and that is not a new projector. I am pretty sure you have to be very carefull in eliminating stray light if you get 5000:1+ at D65.

Rob Tomlin
05-02-06, 10:30 AM
Thanks Ohlson. I was hoping for a little better contrast than that using the iris, but perhaps I was expecting too much.

I am more concerned with my next PJ having better contrast than I am with resolution (720p resolution looks good to me on my current pj, but I could certainly use a boost in contrast).

Ohlson
05-02-06, 10:41 AM
Rob T.
It has been said that Optoma is looking at using an iris that can be controlled by the video signal. That is how Sony can quote 15000:1. By using a similar technique Optoma can reach/claim an even higher number.

Rob Tomlin
05-02-06, 03:02 PM
Rob T.
It has been said that Optoma is looking at using an iris that can be controlled by the video signal. That is how Sony can quote 15000:1. By using a similar technique Optoma can reach/claim an even higher number.

Sounds good to me. Of course I wish they could get that kind of contrast without an auto iris, but I assume it is just a matter of time.

Frank J Manrique
05-02-06, 08:05 PM
Tell me a bit more about your scope setup. Are you using an anamorphic lens or the projector's zoom to fill the 2.35:1 screen? The two different setups will significantly change the required projector distance for the HD81. I'm not sure why you need the special carriage for the SIDE-WAYS positioning.

Am still using an ISCO anomorphic attachment lens with a Dukane 9015 D-ILA display (4:3 AR), but the screen's Scope ratio was chosen to allow 35mm film projection primarily (I can do 70mm too).

The reason for the special carriage engineering was to allow for various adjustable throws with the D-ILA FP, and the sideways feature for precise centering and to move it out of the way when projecting film. ;)

The Dukane display device is quite passe in view of recent development inroads into digital SD and HD displaying, so is time to upgrade.
I considered the Sony "Ruby" but is too bad that I cannot use it as I am not going to compromise image size, so I thought the HD81 could serve me better with its decidedly greater brightness output (I reckon is as bright or brighter than its 'lil brother, the HD72; the latter is very bright!).

I probably still use an anomorphic lens for video projection, but the purchase of a new lens will have to wait a long while...

-THTS

ScottJ0007
05-03-06, 01:19 AM
...Now, I wonder how this projector would work with my 12 foot wide Scope screen that's located in a 30' long room ... Anyone care to commentI've attached another picture of how I "think" the HD81 would work with your 12' wide scope screen...

Dave Harper
05-03-06, 01:12 PM
Am still using an ISCO anomorphic attachment lens with a Dukane 9015 D-ILA display (4:3 AR), but the screen's Scope ratio was chosen to allow 35mm film projection primarily (I can do 70mm too).
-THTS

Now THAT'S a home theater:D!!!!

Frank J Manrique
05-03-06, 08:20 PM
I've attached another picture of how I "think" the HD81 would work with your 12' wide scope screen...

Sweet! Thank you, Sir!... :)

-THTS

Frank J Manrique
05-03-06, 08:21 PM
Now THAT'S a home theater:D!!!!

:D :D :D

-THTS

TzungILin
05-08-06, 10:43 PM
Here is some update on HD81,

We are preparing HD81 for INFOCOMM show at Orlando, FL from June 7-9.

We have added IRIS design that maximizes contrast and lumen trade off. The color and contrast fine tuning has improved further since CES. The overall image is even better than the CES demo.

Anyone who missed the CES demo can now have a chance to look at HD81, at a more refined status.

As the product gets closer to production, I shall keep my lips sealed so that I 'stay out of troubles'. I'll leave future PR to Optoma USA folks. Please wait for their announcement on any product related information. :) Anyone who has questions or doubts on HD81, instead of asking question and speculating, please come to see HD81 for yourself, as "seeing is believing", your eyes will be the best judges.

Thank you for your patience and your great support so far. ;)

Rob Tomlin
05-08-06, 11:36 PM
Here is some update on HD81,

We are preparing HD81 for INFOCOMM show at Orlando, FL from June 7-9.

We have added IRIS design that maximizes contrast and lumen trade off. The color and contrast fine tuning has improved further since CES. The overall image is even better than the CES demo.

Anyone who missed the CES demo can now have a chance to look at HD81, at a more refined status.

As the product gets closer to production, I shall keep my lips sealed so that I 'stay out of troubles'. I'll leave future PR to Optoma USA folks. Please wait for their announcement on any product related information. :) Anyone who has questions or doubts on HD81, instead of asking question and speculating, please come to see HD81 for yourself, as "seeing is believing", your eyes will be the best judges.

Thank you for your patience and your great support so far. ;)


Thanks for the news.

I think most of us are mostly interested in whether there will be any changes to the specs regarding throw ratio and offset. Guess we will have to wait to get the definitive answer to this.

darinp2
05-09-06, 01:46 AM
We are preparing HD81 for INFOCOMM show at Orlando, FL from June 7-9.

We have added IRIS design that maximizes contrast and lumen trade off. The color and contrast fine tuning has improved further since CES. The overall image is even better than the CES demo.Great to hear it. I'll be going to that show and I look forward to seeing it. Will you be there?

--Darin

jmorris644
05-09-06, 07:24 AM
Thanks for the news.

I think most of us are mostly interested in whether there will be any changes to the specs regarding throw ratio and offset. Guess we will have to wait to get the definitive answer to this.

You are correct. These specs are so important to my go or nogo decision.

Joe

J-dubb16
05-09-06, 08:28 AM
This info puts me in a interesting position. My room should be done in late June - at latest the middle of July. Now I don't know if this will be available.

Guitarman - Any word if you will be getting an early unit for testing?

Thanks

SimpleTheater
05-09-06, 08:29 AM
We are preparing HD81 for INFOCOMM show at Orlando, FL from June 7-9.
So is a June release out of the question if you're still demoing it on June 9? Guitarman - what have you heard?

Anyone who has questions or doubts on HD81, instead of asking question and speculating, please come to see HD81 for yourself, as "seeing is believing", your eyes will be the best judges.
Since I don't live anywhere close to Florida, I'll keep asking questions and speculating. :)

--SimpleTheater

SimpleTheater
05-09-06, 08:32 AM
This info puts me in a interesting position. My room should be done in late June - at latest the middle of July. Now I don't know if this will be available.
My room is nearing completion and will be done the first week of June. I can hold off for a little bit, but the NFL starts in September, so anything after Aug. 15 is too late. I'm going to start looking at the Infocus 777 to see if it will fit my space.

--SimpleTheater

J-dubb16
05-09-06, 09:26 AM
Simple - Wow, I wish I had such a large PJ budget, the HD81 and the 777 aren't is the same group in my wallet:)

If the HD81 is not here, I am going with the BenQ 8720. So I am in 720p-1080p Limbo Land.

peter caesar
05-09-06, 09:27 AM
Last Thursday, I visited Coretronic and experienced a 40-minute demo of HD81. It's shooting a contrasty 150" image inside a 170" gain 0.6 (gain 0.8 when new) screen. Most of demo contents were D-VHS recorded from BS-hi (Japnese HDTV, direct satellite broadcst). The D-VHS deck's outputting 1080i through HDMI. I was told it's a Stage-2 engineering unit, CES one is a Stage-1 engineering unit, and INFOCOMM one should be a Stage-3 unit very close to final prouction spec.

The tale end of HD81, a Gennum chip based scaler box, did a very good deinterlacing job; Both Film IverseTelecine and Video per pixel motion adaptive deinterlacing are handled properly with sharp details and smooth edge, none ugly deinterlacing artefacts were observed, very crispy S/N ratio.

The image is astonishingly, jaw-droppingly good.
Iris CLOSED, HD81 is obviously brighter than H79 with MUCH better contrast;
Iris OPENED, HD81 is a light cannon with decent contrast similar to H79.
(Edit: The Iris has 17 steps for user to choose between CLOSE and OPEN.)
To those who expect a big screen, HD81 is a good candidate IMHO. I would say HD81 has a very well designed Iris range
.
I were too busy to watch the beautiful scenes, and didn't pay too much attention to HD81's optics, but with image like this, I bet HD81's optics must be of excellent quality. I actually had approached to a one meter range to verify some details which were never seen on H79, the dimple and pixel grid are as sharp as they should.

Flesh tone looks natural, gamma ramp are smooth and even. But I'm no D65 chaser, so I won't comment on Color further.

Edit, One major improvement over H79 other than Resolution/Lumen/Contrast/Iris, the 6x C/W image of HD81 is simply more stable, relaxing than image of H79, I guess the 3020/3021 controller doing some fine job.

jmorris644
05-09-06, 10:18 AM
Because of the timing (my theater will be done in about 60 days) I had given up on the HD81 and actually had ordered a temporary HD7100. This morning I placed that order on hold. My preference would be the HD81. I guess I can wait for 4 weeks to see the final specs. :)

Joe

SimpleTheater
05-09-06, 10:36 AM
Simple - Wow, I wish I had such a large PJ budget, the HD81 and the 777 aren't is the same group in my wallet:)
I thought the HD81 was going to MSRP around $10k (and I expect little to no discount on models sold the first month). I've seen the 777 for sale @ $12k, so its not far off.

--SimpleTheater

J-dubb16
05-09-06, 10:40 AM
Yes, the HD81 would MSRP for 10K, but from what I have seen the Optomas street for somewhat less.

guitarman
05-09-06, 11:35 AM
Looks like Optoma is on schedule. Wing said he would try to get me one just before launch and that they would bring it out at Infocomm.

"The image is astonishingly, jaw-droppingly good.
Iris CLOSED, HD81 is obviously brighter than H79 with MUCH better contrast;
Iris OPENED, HD81 is a light cannon with decent contrast similar to H79.
To those who expect a big screen, HD81 is a good candidate IMHO. I would say HD81 has a very well designed Iris range"

If I wasn't dreaming I think I was told the Iris has 17steps. Much more control than a model with a 1,2,3 step.

peter caesar
05-09-06, 12:24 PM
If I wasn't dreaming I think I was told the Iris has 17steps. Much more control than a model with a 1,2,3 step.

Yes, the Iris has 17steps for user to choose; Not 3 steps. Sorry for my incomplete/brief expression.

Gary Lightfoot
05-09-06, 12:35 PM
Sounds promising - looking forward to some first hand impressions of this one as it seems to be a good 1st 1080 product by Optoma that also suits my set-up - I prefer a fixed offset to lens shift in my room.

Gary

tonydeluce
05-09-06, 12:38 PM
I can live with the offset and probably live with the throw distance....

I may get the Anthem AVM 50 instead of the AVM 40 and then sell the
VP and buy a good screen with the money :-)

Can this projector operate at 24 or 48 fps?

Dave Harper
05-09-06, 12:43 PM
- I prefer a fixed offset to lens shift in my room.

Gary

Gary,

I don't get that comment. Maybe I'm being stupid or just a brain fart, but with a fixed offset you are locked into one position, even if that's the right one and/or you can make it work. With a variable lens shift, you can set it in exactly the same position as the fixed(usually)....OR you can adjust it to other positions if/when it's needed:confused: You only limit yourself with a fixed offset, so where's the drawback in a variable lens shift (taking crappy design, etc out of the equation.)???

Enlighten me oh wise one of the Home Theater Gods;)!!!

SimpleTheater
05-09-06, 12:53 PM
Looks like Optoma is on schedule. Wing said he would try to get me one just before launch and that they would bring it out at Infocomm.
And when is Infocomm?

--SimpleTheater

Gary Lightfoot
05-09-06, 12:57 PM
Gary,

I don't get that comment. Maybe I'm being stupid or just a brain fart, but with a fixed offset you are locked into one position, even if that's the right one and/or you can make it work. With a variable lens shift, you can set it in exactly the same position as the fixed....OR you can adjust it to other positions if/when it's needed:confused: You only limit yourself with a fixed offset, so where's the drawback in a variable lens shift (taking crappy design, etc out of the equation.)???

Enlighten me oh wise one of the Home Theater Gods;)!!!


Hi Dave,

It's kind of you to praise me that way but I fear you are in error. :)

With the likes of the Optoma H79 and my screen, I have to have the pj about 24ins from the ceiling which is approx 7ft high, so it's nearer the seats (about 18ins from our heads) and in the way when I walk behind them to the equipment rack.

With a fixed offset like my previous Davis DLS8 and NEC HT1000 I could have them more or less flush on the ceiling out of the way and further from the seats - no more bumping into it. I have a low ceiling of 7ft or so, so a fixed offset suits me better. I can't get a lens shift pj on the ceiling as they have to exist within the constraints of the screen (more or less).

Hope that has enlighteded you my Minion (God mode). :D

Gary.

kiwishred
05-09-06, 01:02 PM
You only limit yourself with a fixed offset, so where's the drawback in a variable lens shiftIt think the problem is that variable offset (lens shift) designs seem to always require the lens to be more or less within the screen height whereas fixed offsets seem to always have the lens above (below) the screen. Probably a design choice rather than something fundamental.

What would seem to ideal would be a variable offset with greater range...

Brent

Al Sherwood
05-09-06, 01:29 PM
And when is Infocomm?

--SimpleTheater

We are preparing HD81 for INFOCOMM show at Orlando, FL from June 7-9.

As stated earlier...

darinp2
05-09-06, 01:37 PM
What would seem to ideal would be a variable offset with greater range...I thought the Samsung 710AE could go up to 20% of the screen height beyond the screen edge. Not sure how well it would work at the extreme though.

--Darin

jmorris644
05-09-06, 01:43 PM
Hi Dave,

It's kind of you to praise me that way but I fear you are in error. :)

With the likes of the Optoma H79 and my screen, I have to have the pj about 24ins from the ceiling which is approx 7ft high, so it's nearer the seats (about 18ins from our heads) and in the way when I walk behind them to the equipment rack.

With a fixed offset like my previous Davis DLS8 and NEC HT1000 I could have them more or less flush on the ceiling out of the way and further from the seats - no more bumping into it. I have a low ceiling of 7ft or so, so a fixed offset suits me better. I can't get a lens shift pj on the ceiling as they have to exist within the constraints of the screen (more or less).

Hope that has enlighteded you my Minion (God mode). :D

Gary.

Gery,

I too have a 7 foot ceiling but am concerned with the throw and the head clearance. What size screen are you using?

Thanks

Joe

Gary Lightfoot
05-09-06, 01:45 PM
Hi Joe,

It's an 8ft wide scope screen which is about 40.8ins tall.

Gary

Dave Harper
05-09-06, 01:59 PM
Thanks for enlightening me on your setup Gary:) I still think, in most all cases, a variable lens shift is better though, especially for HT.

I adjusted my comment a little to better serve my God:D

Dave Harper
05-09-06, 02:04 PM
Gary, how far down is the top of your screen???

millerwill
05-09-06, 02:04 PM
I thought the Samsung 710AE could go up to 20% of the screen height beyond the screen edge. Not sure how well it would work at the extreme though.

--Darin

I think it is only 5%.

Dave Harper
05-09-06, 02:06 PM
I have a low ceiling too and can have the pj (a lens shift model) pretty close to the ceiling and still be within the screens range and pj's offset.

Dave Harper
05-09-06, 02:07 PM
At 5%, that should be enough to get it slightly above the screen surface and have it damn near flush to the ceiling.

Gary Lightfoot
05-09-06, 02:51 PM
Hi Dave,

I agree a lens shift pj gives more flexibility, but it isn't necessarily better for everyone as my case proves. If it were longer throw then I could mount it on the back wall but it's not unfortunately. In my case, fixed off set is better, but I can make a lens shift pj work if I have to, although it's not my preference. I don't think it's possible to put a lens shift pj in the same position as a fixed one since the off set is quite different - the LS pj has to remain more or less within the screen boundaries, but a fixed off set one has to remain outside of them. At least that's my limited experience with them.

My screen is about 27/28 ins from the ceiling IIRC and about 16ins from the floor. I think the top of the screen coincides with the center of the H78s lens.

Gary.

Dave Harper
05-09-06, 03:12 PM
Agreed:)

So you could technically move the screen up some if you had/wanted to. How does that affect your viewing angles, etc.?

Gary Lightfoot
05-09-06, 03:18 PM
My eye-line is currently around halfway up the screen, so a little higher than the 1/3rd screenheight recommendation, but is easy on the eye. I could move the screen up but that would mean losing the curtain track (side masking) due to my angled ceiling, so it will more or less have to stay where it is.

Gary.

Dave Harper
05-09-06, 03:21 PM
Good, enjoy your HT, that's what counts after all:)!!!

Frank J Manrique
05-09-06, 03:25 PM
Dear AVS,Let me simply write down the "facts" hopefully to clear out some confusions.

1. It is a true 1920x1080 DMD, 0.95", same as Sharp/SIM 2/Projection Design were using and showing at the show.

Now I am confused...C/Net has recently reported that the HD81 display device is actually a "Wobulating" affair. Being that the case then its chipset's resolution level is not native 1080. Which case is correct?... :confused:

-THTS

millerwill
05-09-06, 03:38 PM
Now I am confused...C/Net has recently reported that the HD81 display device is actually a "Wobulating" affair. Being that the case then its chipset's resolution level is not native 1080. Which case is correct?... :confused:

-THTS

I believe that it is well-established that the 1080p chip in the HD81 is the FULL 1080p chip, not the wobulated one (still used in rptv's).

darinp2
05-09-06, 05:12 PM
If I wasn't dreaming I think I was told the Iris has 17steps. Much more control than a model with a 1,2,3 step.The main reason I've seen for doing 3 steps (Sharp 12k, Yamaha DPX-1100, DPX-1200, and DPX-1300) is because they use 2 irises (so, both open, one open-one closed, and both closed). I have explained in more detail before why 2 irises properly placed (one before the DMD and one after) result in more CR at the same lumens with single chip DLPs than a single iris (assuming irises stay static during playback). I don't know if this is just a single iris with 17 steps or a 2 piece system. Either way it is nice to get some flexibility, but I would prefer a 2 piece system, all else being equal.

Anybody know if the dynamic iris is in or out?

--Darin

Gary Lightfoot
05-09-06, 06:05 PM
Is there any reason why we havn't seen a dynamic iris like the one in the Ruby implemented on a DLP yet? Are there physical differences that make it difficult to work well?

Gary

Frank J Manrique
05-09-06, 06:40 PM
I believe that it is well-established that the 1080p chip in the HD81 is the FULL 1080p chip, not the wobulated one (still used in rptv's).

I truly hope so!...

-THTS

Frank J Manrique
05-09-06, 06:47 PM
Is there any reason why we havn't seen a dynamic iris like the one in the Ruby implemented on a DLP yet? Are there physical differences that make it difficult to work well?

Greg Rogers indicated in his review of the Ruby in Widescreen Review that its auto iris might be too dynamically radical...and wished it had more midway user adjustments.

I don't know what physical differences there are that would prevent DLP displays from having dynamic iris, but would be interesting to find out. I too would like to know...

-THTS

f300v10
05-10-06, 09:05 AM
Is there any reason why we havn't seen a dynamic iris like the one in the Ruby implemented on a DLP yet? Are there physical differences that make it difficult to work well?

Gary

All the 1080P RP DLP sets have dynamic iris (TI calls it Dynamic Black). I am not sure why we have not seen DI on DLP front projectors, but I don't think there is any technical reason. Perhaps TI has not integrated DI logic into the chipsets used for FP. The rear projection sets are wobulated, and probably use different controler chipsets.

guitarman
05-10-06, 10:53 AM
The main reason I've seen for doing 3 steps (Sharp 12k, Yamaha DPX-1100, DPX-1200, and DPX-1300) is because they use 2 irises (so, both open, one open-one closed, and both closed). I have explained in more detail before why 2 irises properly placed (one before the DMD and one after) result in more CR at the same lumens with single chip DLPs than a single iris (assuming irises stay static during playback). I don't know if this is just a single iris with 17 steps or a 2 piece system. Either way it is nice to get some flexibility, but I would prefer a 2 piece system, all else being equal.

Anybody know if the dynamic iris is in or out?

--Darin

I think Optoma had to move fast to reach lauch time in June. Wing said they would test the auto Iris and if it gave negative effects they'd drop it for a semi analog Iris.

Ohlson
05-10-06, 10:59 AM
guitarman
So what we should expect is a single 17 step iris. A 1080p competitor to HD81, Cinetron HD900, is also looking like they will go with a very smooth iris function.

guitarman
05-10-06, 11:43 AM
Wing said as the bulb ages the 17 steps will give you better control to raise the brightness back to what you like without taking giant steps.

Dave Harper
05-10-06, 03:42 PM
Wow, that sounds a lot like Alan's "Ruby Brightness Tweak". I agree with Wing and Greg Rogers when he mentioned the Ruby could use a few more settings like this. I'm glad Optoma took this into account.

I can't wait to see one of these more refined (than CES) units:)

gregr
05-10-06, 05:14 PM
I agree with Wing and Greg Rogers when he mentioned the Ruby could use a few more settings like this. I'm glad Optoma took this into account.
That is something I talked about with TzungILin at CES. I hope it makes it into the final product.

darinp2
05-10-06, 06:22 PM
I agree with Wing and Greg Rogers when he mentioned the Ruby could use a few more settings like this.With the Ruby, for those who don't want to use the iris in auto mode, they can adjust the position of the iris when set to "On" in the service menu just like this. Its pretty much infinitely variable between full open and as closed as Sony allows it to physically get.

The auto iris mode is more complicated, but has adjustments in the service menu also. One thing that I'm pretty sure isn't possible with the Ruby (and might have been nice) is to make the highest case (or most open) in auto iris mode be with the iris already partially shut down. That would mean higher starting static on/off CR.

--Darin

lovingdvd
05-11-06, 12:49 AM
Regarding the talk about auto iris on 1080p DLP - I too would love to see this. I think its pretty clear from Greg's review of the dVision 1080p DLP that without an auto iris these 1080p DLPs will not begin to come close to the CR offered by the DI in the Ruby. Of course the 1080p will have other advantages such as much better sharpness.

I bring this up about the CR only because I really WANT to see 1080p DLP adopt DI so I can go back with 1080p DLP and get the best of both worlds (DLPs razor sharp image + deep blacks and high CR). Looks like folks will be forced to choose which they prefer, at least with the first round of 1080p DLPs. Of course one can use the manual iris stops to get great black levels, but you can count on this being at the expense of overall brightness. Hency the need for the DI. Just my 2 cents.

Signia
05-11-06, 12:36 PM
I heard today that Optoma may not make the June ship date. Supposedly they are still tweaking/finalizing the Optics. This was from my AV guy who spoke to an engineer at Optoma.

Hyrax
05-11-06, 01:34 PM
I thought the Samsung 710AE could go up to 20% of the screen height beyond the screen edge. Not sure how well it would work at the extreme though.
--Darin
I believe I read that the Samsung lense shift will cause keystoning if it is more than 5% over the top of the screen. You can always tilt the screen to get rid of the keystoning, however.

One problem with varialble lense shift is that there are (very slight) focusing issues and it often causes a decrease in brightness that increases the further away from the center of the screen you place the PJ. I'm buying a 710AE, so I'm not against lense shift. It is just that there are compromises to be made, as always :).

tat
05-18-06, 04:41 PM
If for no other reason than to bump this thread - I would like to step up to a 119" screen in a light controlled room with this projector(viewing distance about 120" and angle of view not really important). I'm assuming the projector will be reasonably bright - what screen do you think I should check out. I know its all conjecture at this time, but between waiting for this and Blu-ray, i need somthing to keep me busy researching. Any advice would be appreciated (other than to check out the screens forum)

Thanks,

Tawn

tat
05-18-06, 04:42 PM
If for no other reason than to bump this thread - I would like to step up to a 119" screen in a light controlled room with this projector(viewing distance about 120" and angle of view not really important). I'm assuming the projector will be reasonably bright - what screen do you think I should check out. I know its all conjecture at this time, but between waiting for this and Blu-ray, i need something to keep me busy researching. Any advice would be appreciated (other than to check out the screens forum)

Thanks,

Tawn

Randall Morton
05-18-06, 05:15 PM
If for no other reason than to bump this thread - I would like to step up to a 119" screen in a light controlled room with this projector(viewing distance about 120" and angle of view not really important). I'm assuming the projector will be reasonably bright - what screen do you think I should check out. I know its all conjecture at this time, but between waiting for this and Blu-ray, i need something to keep me busy researching. Any advice would be appreciated (other than to check out the screens forum)

Thanks,

Tawn

Research this thread from the beginning and most of the questions that can be answered at this time have been answered.

tat
05-18-06, 08:56 PM
I was looking for more of a discussion, than a non answer. I know its all a guess at this point, but just wanted some input based upon the info we know and the experience of this forum. I have read this thread since day one, and was more interested in what screen a bright projector in a light controlled room some of the members might suggest i investigate. Oh well - at least I got the bump.

Tawn

Dave Harper
05-19-06, 11:43 AM
If it's a bright projector in a light controlled room you can't go wrong with the Stewart ST130 Luxus Deluxe w/ Velux coating. A good alternative on a budget is the Dalite Cinema Contour with Cinema Vision Fabric. That will be about 60% of the cost of the Stewart.

Hyrax
05-19-06, 01:00 PM
I remember Alan talking about a 1.0 gain screen that was woven in such a way that it was almost acoustically transparent.

The interesting thing about the screen was that he said that if you put a black cloth behind it, you would get slightly better contrast and black level.

I forget the name of the screen, but Jason or Alan should know what I'm talking about.

SimpleTheater
05-19-06, 01:13 PM
I remember Alan talking about a 1.0 gain screen that was woven in such a way that it was almost acoustically transparent.

The interesting thing about the screen was that he said that if you put a black cloth behind it, you would get slightly better contrast and black level.

I forget the name of the screen, but Jason or Alan should know what I'm talking about.
Screen Research.

--SimpleTheater

Scott B
05-19-06, 01:19 PM
Without question the best acoustical screens available. Drawbacks are price and lack of gain.

Dave Harper
05-19-06, 04:07 PM
Agreed, but I don't think he was asking about an acocustical screen though.

Hyrax
05-19-06, 04:19 PM
Yes, that is it... Screen Research.
I wasn't sure if the question was for acoustical or not. Sometimes it is hard to find a spot for a center speaker if you're putting up a large screen on a low wall. The main reason for mentioning it, however, was what I remembered about how Alan said that it seemed to improve black level if a black cloth was put behind it.

Dave Harper
05-19-06, 04:36 PM
Yes, and you can get them with a black backing from Screen Research also.

Frank J Manrique
05-19-06, 08:49 PM
The interesting thing about the screen was that he said that if you put a black cloth behind it, you would get slightly better contrast and black level.

Any screen material that doesn't have some sort of backing to prevent spillover needs light absorbing material. I've been using black felt behind my custom-built 12 foot wide scope screen for that very reason; the screen material doesn't have any backing and the resultant spillover was simply overwhelming.

It shouldn't be different for the Screen Research stuff either...

-THTS

guitarman
05-20-06, 01:11 PM
Well we're finally entering the last quarter of the month before the HD81 is due to launch. How about that, almost there.

Earz
05-22-06, 07:23 AM
Well we're finally entering the last quarter of the month before the HD81 is due to launch. How about that, almost there.


Enough talk or something.....lets see some screen shots soon ;)
This pj is starting to remind me of Blu Ray.

If I wait 6 weeks after official release to buy one, will I get 3-4k off sticker, and a free lamp? :D

Signia
05-24-06, 12:22 PM
Well we're finally entering the last quarter of the month before the HD81 is due to launch. How about that, almost there.

Are you sure about this? I spoke with Optoma a few days ago, and the rep said "That one is a while off."

guitarman
05-24-06, 06:04 PM
I'm talking with the nuts & bolts guy that goes back and forth to Taiwan every month or two months. I think he has a better idea than a rep. He's getting a few delivered this week for the Infocomm show.
Patience! :)

Al Sherwood
05-24-06, 07:30 PM
Without question the best acoustical screens available. Drawbacks are price and lack of gain.

Within reason and cost, how do they compare to say a DaLite Cinema Perf?

SimpleTheater
05-25-06, 08:09 AM
Within reason and cost, how do they compare to say a DaLite Cinema Perf?
This subject should be moved to the Screen Research thread (Allen hates SR talk anywhere else). But in the interest of answering the question, the DaLite Cinema Perf exhibits both high frequency drop off and moire problems. The only non-SR screen that seems to be close (and IMO very close) is Stewart.

--SimpleTheater

Randall Morton
05-25-06, 08:57 AM
I agree, this thread is already too bloated. We need a new thread if the projector is ever released.

Scott B
05-25-06, 09:28 AM
I owned a Stewart microperforated screen before switching to a SR ClearPix 2 screen. The acoustical transparency of the SR was notably superior to that of the Stewart. How apparent this would be in your system would depend a great deal on the acoustical design of your HT as well as the quality of the components. Stewart does have the benefit of offering higher gain microperforated screens, so if that is what you need, then SR is not really an option.

Al Sherwood
05-25-06, 02:10 PM
I owned a Stewart microperforated screen before switching to a SR ClearPix 2 screen. The acoustical transparency of the SR was notably superior to that of the Stewart. How apparent this would be in your system would depend a great deal on the acoustical design of your HT as well as the quality of the components. Stewart does have the benefit of offering higher gain microperforated screens, so if that is what you need, then SR is not really an option.

Thanks Scott and SimpleTheater, I'll search for more information in that thread.

Scott, if you have the time and bought your screen in Canada could you PM me with details of what I could expect to find one on this side of the border and what I could expect to pay? Thanks

Scott B
05-25-06, 02:53 PM
Al,
You got mail.

Joe Linn
06-04-06, 02:04 PM
This thread has been quiet lately. Infocomm started yesterday. Has there been any update on the H81? Are there any reports on what has changed from people who have seen it at the show? Did they change the iris? Has Optoma announced an availability date?

Joe

tat
06-04-06, 10:20 PM
I think the exhibits start on Wednesday (June 7) - I hope we have someone going who can give an update on th H81. I saw it at CES and was very impressed. If it's better now - i can't wait.


Tawn

phisch
06-05-06, 03:53 PM
Can we assume the HD81 will be released shortly after Infocomm? Tom, do you know when you will be getting one to review?

guitarman
06-05-06, 05:53 PM
Wing said right after Infocomm I should be able the test one. You know the company needed to work hard 24/7 for the early release which was targeted for the end of June. Key marketing is to get these out early. I'll learn more when they return after this week. Hope it's good news.

Craig Peer
06-05-06, 07:05 PM
I'll bring the wine over Tom if I can come take a peek when you get one ( oh crap - hold on to my wallet - somebody please )!!

SimpleTheater
06-05-06, 09:07 PM
Wing said right after Infocomm I should be able the test one. You know the company needed to work hard 24/7 for the early release which was targeted for the end of June. Key marketing is to get these out early. I'll learn more when they return after this week. Hope it's good news.

Seems like Infocus is planning on getting their 1080p DLP single chip out in July or early August, so Optoma is definitely going to have a head start. Hard work pays off.

--SimpleTheater

guitarman
06-05-06, 09:17 PM
Sure thing, I still have your Cosmopolitan 4.3, it's down right now. I just got my HT1000 back from repair today. Looks nice with just a Denon 1600 in interlaced. GoldenEye's going.

Catdaddy67
06-05-06, 11:16 PM
Im sorry if I missed this in one of the many Optoma threads but did they find out exactly what was causing all the bulb failures, and has it been corrected?

funlvr1965
06-05-06, 11:56 PM
Im sorry if I missed this in one of the many Optoma threads but did they find out exactly what was causing all the bulb failures, and has it been corrected?


TRAITOR! :eek:

Dave Harper
06-06-06, 01:51 PM
TRAITOR! :eek:

:p:p:p:D!!!!!!!!!!

HiHoStevo
06-06-06, 06:22 PM
Im sorry if I missed this in one of the many Optoma threads but did they find out exactly what was causing all the bulb failures, and has it been corrected?

My humble interpretation of those remarks would be ............

Ahhh......nope! :eek: